Answer:
Options B and D
Explanation:
In animals, gaseous exchange takes place in the alveoli in the lungs. Generally, animals breath-out (exhale) carbon dioxide and breath-in (inhale) oxygen. Thus, carbon moves from the blood in the form of carbon dioxide into the alveoli in the lungs while the oxygen inhaled moves from the alveoli in the lungs to the blood where it is transported round the body as oxyhaemoglobin.
The correct answer is C. The constituents in food that the body requires to function properly.
Explanation:
In health, nutrients are substances found in food that are essential for life and different functions in living organisms such as grow, reproduce, or develop. These substances are needed in different amounts by humans, which is defined by the recommended daily intake; for example, everyday individuals should eat between 45 to 75 grams of fat. Moreover, nutrients are classified into big groups that include fats, minerals, proteins, vitamins, and carbohydrates. According to this, nutrients are "the constituents in food that the body requires to function properly."
Bones become more brittle as we age. B
It's b because it's that hope I help
